Insole for ski-boots



March 30, 1937. JACOBSEN ET AL 4 2,075,723

INSOLE FOR SKI BOOTS Filed NOV. 8, 1934 Patented Mar. 30, 1937 UNITED STATES INSOLE FOR Einar Jacobsen, Halden,

Oslo, Norway,

fabrik, Halden, Norway Applicatioln November 8,

11 Norway No 1 Claim.

In the manufacture of s i-boots of the special Norwegian quality, the insole is attached to the upper leather by means of a stitch made in a groove in the insole. This groove is made in such 5 a manner, that along the insole edge somewhat distant therefrom an inclined cut is inade which is directed towards the sole edge, whereupon the rib formed thereby may be turned up. The

, stitch is passed through the bottom oi this groove and through the insole material so as to pass out through the sole edge and then through the upper leather. This method of manufacture presents no difficulty if the stitch is effected by hand, but if it is tried to effect the stitch in an ordinary shoe sewing machine, there arise difficulties, because the upwardly bent rib is too weak and flexible, and therefore it does not present a suflicient guide and rigidity to obtain a perfect stitch by means of the machine. For this reason. it has not been possible hitherto to obtain satisfactory results in the manufacture "of ski-boots in shoe sewing machines. The present invention relates to an arrangement whereby this may be possible.

In the manufacture of welt-seam shoes the insole is connected with the upper leather by means of a double rib which is made partly by making a channel in the same manner as mentioned above in connection with stitching by hand in ski-boots and partly by making a channel horizontally in the exterior edge of the insole. By means of the last-named channel an outer ribis also formed w ch is bent up side by side with the ordinary inner rib and is pasted to same, whereby the combined rib provides great rigidity. However, this method has not been used in connection with ski-boots. According to the present invention such a combined or double rib is made in the same manner as used in the manufacture of welt-seam shoes, but the insole feather which in the last-named type of shoes is present outside the double-rib is, according to the present invention, cut away complete- 1y. In this. manner a double, stiff and strong rib is obtained at the exterior edge of the insole,

and this rib appears to be suitable for the manufacture of ski-boots in shoe sewing machines. The object of the present invention is consequently an in'sole per se made in the manner set forth above and suitable particularly for skiboots. The invention alsocomprises ski-boots manufactured with such an insole.

The invention is illustrated in the annexed drawing. Fig: 1 shows the ordinary manner of 5 connecting insole to upper leather. Figs. 2, 3 and 4 show the ordinary manner for the manufacture of insoles in welt-seam shoes, and Fig. 5 shows a portion of an insole made according to this invention. Figure 6 is a partial cross 60 section of the finished shoe.

assignors to SKI-BOOTS and Johannes (Jarlsson,

A/ S. Ostfold Sko- 1934, Serial No. 752,128

vember 20, 1933 According to Fig. 1 the insole i is made in the ordinary manner with a rib 2 by making an inclined channel 3 in its bottom face somewhat distant from and along the exterior sole edge so as to leave between the bottom of the channel 3 and the sole edge material 4 forming an intermediate substance for the stitch 5 of pitched thread which has to connect the insole l with the upper 6, the exterior edge of which is bent outwards in ordinary manner as indicated at l 10 to be sewn together withthe outsole (not shown). This is the ordinary method used in the hand manufacture of ski-boots. As shown in Fig. 2-the insole l is provided, in a manner similar to that shown in Fig. 1, with an inclined 15 channel 3 forming the inner rib 2 but is provided, in addition thereto, in the exterior edge of the insole l with a horizontal channel 8 directed straight inwards and forming an outer rib 9. When now the ribs 2 and 9 are bent up 20 as indicated in Fig. 3 and are then pasted together as indicated in Fig. 4, a strong and stiff double'rib is formed which provides the necessary support and guide for the sewing machine in sewing the insole together with the upper. 25 The insole feather I0 left under the channel 8 is necessary in welt-seam shoes for the further manufacture of same.

Now according to the present invention the exterior feather I0 is cut away on H to obtain the insole shown in Fig. 5, wherein the double ribs 2, 9 are located at the exterior sole edge. The stiff rib. thus obtained is found to be quite sufficient to enable a sewingtogether of the insole I and the upper by means of sewing machines. A connection is thereby obtained which is of a quality quite equivalent to a hand-stitched connection. An insole as shown in Fig. 5 thus constitutes an element in any sort of ski-boots which is sewn with pitched thread 40 in the sole portion.

As shown in Fig. 6, upon having made the stitch 5 connecting insole l and upper 6, the out-- side H is sewn fast by a stitch I2, whereupon the last l5 is-removed.

We claim:

An insole for sk tion and an edge porti -boots comprising a body poron, said edge portion being formed all around the sole edge except around the heel portion, with a double rib consisting of an exterior, upwardly bent rib and an interior upwardly bent rib, both -'ribs being integral with the sole body portion and pasted together along their adjacent faces, so as to constitute a combined rib along the outermost edge of the sole without any exterior projecting feather.

EIN'AR J ACOBSEN.

the cutting line 30 

